Electrical coil winding apparatus



Feb. 27, 1934. B. c. BEITLING 1,948,875

ELECTRICAL COIL WINDING APPARATUS Filed March 24, 1933 INVENTOR.

Bismark eBay/m A TTORNE Y Patented Feb. 27, 1934 UNITED STATES PATENT OFFlCE 6 Claims.

in the electrical trade it is frequently necessary to replace individual coils in electric motors and generators or to replace all of the coils in such' machines, due, principally, to the fact that they burn out, due to over-load or to deterioration of the insulation on the wires that comprise the coils.

Owi'ngto the fact that motors and generators are made in many shapes and sizes to meetindividual requirements, it follows that the coil of themotors and generators also vary in numberof turns of wire in the individual coil, as well as in size and shape.

Consequently, it is necessary that the mechanic who engages in the work of repairing motors; etc., be prepared to wind variable sized and shaped coils.

Therefore, in view of the foregoing remarks, it is a prime object of the present invention to "provide in a coil winding apparatus, readily adjustable means to wind electrical coils regardless of the shape of the coil or its size or the number of turns of wire per coil.

A further object of the invention is to provide means to permit the formed coil to be readily removed; from the winding apparatus without disassembling the device.

A still further object is to provide a coil winding; apparatus in which a plural number of coils may be formed, before removal of any individual coil.

Another object is to provide an electrical coil winding machine that is simple in construction, ruggedl'y built, and readily operated, even by the relatively inexperienced workman.

As shown in the drawing, one sheet:

Figure 1 is a side elevation showing the device of this invention mounted upon a mandrel and adapted to be power driven.

Figure 2 is a view partially in section, taken on line 2--2, Figure 1, showing one of the slidable cross arms in side elevation and showing how it is held to the main support bar.

Figure 3 is a sectional elevation, taken on line 3----3', Figure 4.

Figure 4 is a side elevation of the device disassociated from its mandrel.

Figure 5 is a detail taken on line 5-5, Figure 6, showing how the finger supporting posts are fitted in their slidable supports and also showing how the fingers are held to the posts.

Figure 6' is a fragmental detail, taken on line 6'6, Figure 10, showing a finger supporting post, some of the fingers being mounted on the post,

and particularly showing the method employed to permit the support for the finger supporting post to slide upon the main support bar.

Figure 7 is a front elevation of the construction described in Figure 6.

Figure 8 is a plan view in section, taken on line 8-8, Figure 6, showing finger construction and the method employed to secure the finger to its supporting post.

Figure 9 is a fragmental detail taken on line 9-9, Figure 3, showing how the finger posts are slidably supported in the cross arms.

Figure 10 is a detail, showing one of the finger supporting posts in operable position and showing a tool fitted over the head of the post whereby it may be screwed down through its slidable support to jam against its base support, whereby it will be in locked position.

The device of this invention, as indicated by the reference character 15 essentially comprises a base member 16 and a plural number of cross arms 17, which are adjustable along the face 18 of the base member; and slidable block members 19, which are also adjustably positioned along the face 18 of the base member 16; and adjustable I, finger supporting posts 20 which are secured to the cross arms 1'7 and to the slidable block members 19.

As shown in. Figure 1, the coil winding device 15 is shown mounted upon a power driven man- I drel 22 by means of a stub shaft24 formed integral with the base member 16. As shown, the mandrel is formed with a frame member 25 and a bearing 26 within which the mandrel 22 is rotatably driven by means of a power pulley 27, driven by an external source of power not shown or essential to the disclosure herein made.

By reference to Figures 2, 3, 4, and 5, it will be observed that the cross arms 1'7 are keyed to the base member 16, but are slidably adjustable along the face of said base member. A bolt 29 is screwed through the cross arms 17, the leading end of which .jams or presses upon the base member when screwed down tightly, thereby insuring that the cross arms will not shift when rotatably driven about the axis of the stub shaft 24.

slidable blocks 19 are fitted to the face of the base member in the same manner that the cross arms are fitted, see Figures 5 and 6. As is clearly shown in Figures 5, 6, and 10, the blocks 19 can be locked in any position, to which they are adjusted, by means of turning the posts 20 until their threaded ends engage the upper face 18 of the grooved slideway 18'.

The cross arms 17, as shown in Figures 1, 3, 4, and 9, are so formed as to permit the posts 20 to be adjustable substantially throughout the length of the arms, this adjustability is made possible by means of a slot 30 which extends lengthwise of the arms. The arms are also formed with post support guideways 32 which are parallel with, and somewhat wider than the slot 30. A sub-passage 34 is in continuous com-- munication with the slot 30, thereby forming a recess which is adapted to receive a locking block member 36, which in cooperation with the post supports 38, enables the posts 20 to be held in an erect position.

As referred to in connection with block members 19, the posts 20 can be secured in any position by turning the post with a suitable tool, as wrench 40, until the threaded end of the post jams down against the bottom face 41 of the subpassage 34.

As shown in the several figures of the drawing, the posts 20 are adapted to receive and to be fitted with fingers 45. The base portion of the fingers is rounded in a half circle 46, so as to fit snugly against the several posts 20, being held in that position by means of screws 4'7.

As particularly shown in Figure 5, the posts 20 are formed with a plurality of passages 48 through which screws can be inserted, whereby the fingers can be spaced apart at variable distances.

A slot 49 extends substantially the length of the post and is adapted to receive the head of the screws 47 in themanner of counter sinking, thus eliminating sharp edges or corners that might otherwise tear or mar or bruise the insulation of the wires to be formed into coils on the machine.

Having thus .describedmy invention, it will be apparent that after having determined the several dimensions of the coil to be formed, it is anly necessary to move slidable block members 19 along the face of the base member 16 until their position coincides with'the desired position as indicated by the scale on the base member 16. The two blocks being spaced equally from the central axis of the base member.

The cross arms are also adjusted along the face of the base member 16 until they are spaced apart the required distance, after which the posts 20 in the cross arms, are adjusted to their position, as will be indicated by the width of the coil to be formed. As the several posts are moved to their correct position upon the base member or upon the cross arms, they are given a turn so that their threaded ends are caused to jam down tightly against their immediate base supports, thereby insuring that they will not slip from their position due to centrifugal action of the revolving apparatus. 7

The fingers 45 are adjusted along the length of the posts 20 until the space between two fingers equals the thickness of the coil to be formed. The screws 47 are then slipped through the proper passageway 48 and the screw sent home into base of the fingers 45 whereby it will be held intact.

The coil winder is now ready to receive the wire. The free end of the wire can be temporarily wrapped around one of the fingers of the winder while the rest of the wire from the spool is held taut and the winder is caused to rotate, thereby laying the required number of turns of wire.

After one coil has been formed, it is possible to form other coils by merely guiding the wire over to the spacing between the next adjacent pair of fingers, and continuing the operation as above described. After the coils are formed and are ready to be removed, it is only necessary to give the several posts 20 a reverse turn, thereby causing the fingers to move to the position indicated by dotted lines 45', see Figure 1. The coils can then be readily slipped off the winder.

Having thus described the preferred form of my invention, but appreciating that it is possible for those skilled in the art, to make certain changes of character and innovations of construction herein, without departing from the spirit of the invention contemplated, I wish to, and do, claim all such changes of character and innovations of construction as fall within the scope of the invention herein disclosed.

I claim:

1. In an electrical coil winding apparatus, a base member, a plural number of cross arms in slidable relation to said base member, a plural number of blocks, said blocks being slidable along the face of said base member, posts, certain of said posts being in fixed relation to said blocks, and others of said posts being adjustable along the length of said cross arms, and fingers projecting from said posts, said fingers having an arcuate base adapted to bear against said posts, said posts being slotted to accommodate screws whereby said fingers may be secured in any intermediate position along the length of said posts, said fingers being adapted to confine the turns of the coil formed on said apparatus.

2. In an electrical coil winding apparatus, a base support, said base support being slotted, cross arms in adjustable relation to said base support, finger supporting posts in adjustable relation to said cross arms, post supports, one of said post supports being adapted to slide along the upper face of said base member, the other of said post supports being adapted to slidably move within said slotted base support, and fingers, said fingers being adjustable along the length of said posts.

3. In an electrical coil winding apparatus, a base support, said base support having a passageway extending through its length, cross arms in adjustable relation to said base support, finger supporting posts in adjustable relation to said cross arms, post supports, certain of said post supports being slidable along the face of said base member, others of said post supports being adapted to slide within said passageway, and fingers, said fingers being adjustable along the length of said posts, and means to rotate said apparatus.

4. In an electrical coil winding apparatus, a base support, said base support having a passageway extending through its length, cross arms fitted in said passageway and in adjustable relation to said base support, said cross arms having a passageway extending through their length, finger supporting posts, certain of said posts being fitted in said last mentioned passageway and in adjustable relation thereto, and others of said posts being fitted in and in adjustable relation to the passageway in said base member, and fingers, said fingers having an arouate base adapted to partially encircle said posts, said posts being slotted to receive a screw whereby said fingers may be held in any position with respect to said post.

5. In an electrical coil winding apparatus, a base support, said base support being slotted, cross arms secured to said base and in adjustable relation thereto, said cross arms being slotted, finger supporting posts, said posts being attached to and in adjustable relation to said base and said cross arms, fingers, said fingers being adaptin adjustable relation to said base and said cross arms, fingers, said fingers being adapted to be secured to said posts, means to secure said posts in fixed position, said means comprising blocks positioned within said slots and screwed to the ends of said posts, whereby screwing said posts into said blocks will lift said blocks in said slots against an interior face of said base and said cross arm to bind said post in fixed position, and means to rotate said apparatus.

BISMARK C. BEITLING. 

